[1] Basing his ideas on earlier designs, in 1792, Weidinger experimented with a 7-keyed trumpet, a version of the instrument on which a full chromatic scale became possible, albeit with alleged loss of the instrument's usual power.
In 1799 Weidinger became a member of the Imperial and Royal Court Trumpeter Corps.
Johann Nepomuk Hummel, who was Haydn's successor as Kapellmeister to the Esterházy family, also composed a Trumpet Concerto for Weidinger; this was originally written in the key of E major, but it is often played in the key of E flat major.
Hummel also wrote a Trio for trumpet, piano and violin for Weidinger; this is now lost.
Other composers known to have written for Weidinger include Leopold Kozeluh and Joseph Weigl (1766–1846).